Improvement in sewing-machines



H. F. SGHLUBTER.

Sewing-Machine.

Patented Aug. 5, 1879.

l G I T Invent or Ill/I221 m r fittest UNITED STATES PATENT OFT-Ton.

HENRY F. SGHLUETER, OF CINCINNATI, OHIO.

IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Letters Patent N 0. 218,141, dated August 5, 1879; application filed April 14, 1879.

To all whom 'itmay concern: The fork K may be split in a similar manner,

Be it known that I, HENRY F. SGHLUETER, and provided with a screw to adjust the pressof Cincinnati, Hamilton county, Ohio, have ureonthesides of ballL with the utmost mcety. invented certain new and useful Improvements It will be readily understood that the vlbrain Sewing-Machines, of which the following is tions of connecting-rod E, as it communicates a specification. its motion to wrist G, cause rockerN to swing This is an improvement in those sewingon pivot P, because said rod E traverses the machines in which the shuttle-lever is operated bcarin gs R R. Consequentlya correspondlng from the connecting-rod that communicates swinging motion is imparted to arm M and 1ts motion from the main shaft to the feed-shaft; spherical termination L, which sphere vibrates and my invention comprises a novel device for shuttle-lever J J K on the stud I, and by driving such shuttle-levers. This device is a properly locating this stud any desired throw rocker suitably pivoted in the frame of the maof the shuttle may be obtained. chine, and provided with two eyes, boxes, or From the above description it is evident the bearin gs, traversed by the connecting-rod, said extended bearing of rod E in rocker N It R, rocker being furnished with a depending arm, insures the most positive actlon of the latter, whose vibrations impart the desired motion to while the ball L operates shuttle-lever J K the heel of the shuttle-lever. The preferred with the least possible friction and without method of coupling this arm to the lever is by tending to produce any vertical vibratlons of means of a ball at the lower end of the former, said lever. which ball engages with a fork or slot in the My invention may be modified by forking heel of said lever. the operating end of arm M, and causing it to By this construction the rocker has an exengage over the heel J of the shuttle-lever. tended bearing on the connecting-rod, thereby I am aware it is not new to impart motion insuring a positive vibration of the former, from the connecting-rod of a sewing-machine while the ball serves as a universal joint, to to the shuttle-lever of the same by means of operate the shuttle-lever with the least possibell-cranks and similar appliances having but le friction and without imparting any vertia very limited bearing on such rods; but I cal motion to the latter. know of no instance where a device is cm- In the annexed drawings, Figure 1 is a side ployed that has an extended bearing on the elevation, partly in section, of a portion of a rod, and that operates without exercising an sewing-machine embodyingmyinvention. Fig. elevating and depressing action on the heel of 2 is a transverse view of the same; and Fig. the shuttle-lever. 3, a vertical sectional view of the rocker on a I claim as my inventionslightly reduced scale. 1. The combination,in a sewing-machine, of Suitably journaled in the frame A is the driving-shaft B, eccentric D, connecting-rod main or driving shaft B, carryinga customary E, feed-shaft F, pivoted rocker N, provided belt-pulley, O, and eccentric D, to which latter with extended bearings R R, vibrating arm is coupled the connecting rod E,that communi- M, and shuttle-lever J J, substantially as deoates motion to feed-shaftF by means of wrist scribed. G, said feed-shaft being supported in hangers 2. The combinatiomiu a sewing-machine, of H, or otherwise. driving-shaft B, eccentric D, connecting-rod Adapted to vibrate on stud I is the shuttle- E, feed-shaft F, forked shuttle-lever J J K, lever J, whose heel J is forked or slotted at K pivoted rocker N provided with extended to receive snugly within it the ball L, situated bearings R R, and arm M, provided with ball atthe lower end of an oscillating arm, M, which L, substantially as herein described. arm is cast with or rigidly secured to rocker N. In testimony of which invention I hereunto This rocker is pierced at O to admit a pivot, set my hand. 1?, which pivot is fastened in frame A. Furthermore, saidrockerhas two eyes,boxes, HENRY F. SGHLUETER. or other bearings, R R, within which reciprocates freely the connecting-rod E, and said Witnesses: boxes may be split and provided with screws J Arms H. LAYMAN, S S, respectively, to take-up any lost motion. RANKEN D. JONES, 

